component
TD8303X
Public Made by Adomby adom
Shenzhen JingYang DC-DC Converters, ESOP-8L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTD8303X
Shenzhen JingYang · DC-DC Converters · ESOP-8L
TD8303X from Shenzhen JingYang, in a ESOP-8L. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | BST | passive | High-side gate drive boost input that supplies the high-side N-channel MOSFET drive; connect a 0.01µF or greater capacitor from SW to BST. |
| 2 | VIN | power_in | Power input for the IC and the buck converter, supplied with 4.5V to 30V; bypass to GND with a large capacitor plus at least 0.1µF ceramic. |
| 3 | SW | output | Power switching output node that supplies power to the output through the LC filter; a capacitor from SW to BST is required to power the high-side switch. |
| 4 | GND | power_in | Ground. |
| 5 | FB | input | Feedback input that senses the output voltage via a resistor divider from output to ground; sensitive node, keep away from SW, VIN and BST. |
| 6 | COMP | passive | Current sense for line compensation and current limitation. |
| 7 | EN | input | Enable input: drive high to turn the regulator on, low to turn it off; attach to VIN with a 100kΩ pull-up resistor for automatic soft-startup. |
| 8 | SS | passive | Soft-start adjustment: connect a capacitor to program soft-start time; default soft-start is 1ms if the pin is floating. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen JingYang |
| Package | ESOP-8L |
| Category | Power Management (PMIC) |
| Pins | 9 |
CAD (KiCad official)
- Symbol:
TD8303X - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8L (KiCad packages3D, STEP)
- 3D model files:
td8303x-etched.step/td8303x-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);td8303x.step/td8303x.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shenzhen JingYang datasheet (9 pp, sha256
756052e7cbdc4f48, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(vision), consensusclaude-opus-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).